Find this code on your page:
if (targetselect.options.length > 0) {
targetselect.options[0].selected = true;
}
and update it to be like this:
if (targetselect.options.length > 0) {
targetselect.options[0].selected = true;
} else {
targetselect.options[0] = new Option();
targetselect.options[0].value = "";
targetselect.options[0].text = "CREATE OPTION";
}